Abstract:

Using the quadratic orthogonal revolving experiment of three factors and four levels, the effects of amount of nitrogen fertilizer, phosphorous fertilizer and potassium fertilizer on yield of ‘Jingxiaohei’ variety were studied to need of the N, P, K elements of the kidney bean, in order to explore high yield and stead of the kidney best fertilizer technique, and put forward the corresponding optimization cultivation measures, excavation yield potential, improve the comprehensive production capacity of kidney bean. The results showed that: in particular ecological areas of northwest Guizhou, if the yield of ‘Jingxiaohei’ beyond 3400 kg/hm2, the cultivation measures of N 93.57-117.64 kg/hm2, P2O5 192.33-257.67 kg/hm2, K2O 101.90-148.10 kg/hm2 should be taken. Analysis showed that, the order of contributive rate of each factor was N > K2O > P2O5 on yield effect. We found the key technique was the amount of N, and the second important role was the K2O and P2O5 on yield effect of ‘Jingxiaohei’ variety.